Pneumatic-control device



s. L. FISHER FNBUMATIC CONTROL DEVICE Filled Oct. 23, 1920 2 Sheets-Sheet l l April 26, 1927.

, S. l.. FISHER PNEUMATIC CONTROL DEVICE 2 Sheets-Sheet 2 i Filed Oct. 23. 1920 @ffy Patented Apr. 26, 1927. i i i UNITED p STATES PATENT GFF-ICE.

STANLEY L. FISHER, OF CHESTER, CONNECTICUT, ASS'GNOR Tf.) PRATT READ PLAYER ACTION COMPANY, OF DEEP RTVER,I CONNECTICUT.

IPN.'EiUlVI'A'lIC-C(.`)1\2f'1l`\.'()I.| DEVICE.

Application filed October 23, 1920. Serial No. 418,578.

This invention relates to a pneumatic conregulating valve which controls the exhausttrol device, and more particularly to a pneuing of the air 'trom the Wind chest of the matic control device to be used with the instrumentby the pumps. This expression power pncuii'iatics which are employed in pneumatic is shown at as having anarm i automatic musical instruments. rl'he device, 56 attached to the movable leal' thereof, and 6o lnnvever, is ot' broad and general aiplication, they arm 56 is attached by a link 57 to thek as it may be used with power pneumatics ot' expression valve 58 controlling a port 59. any character. lt is iiarticularly adapted to 'l'o control the operation oin the expression control the expression piieuinatics in player 'l have provided a pneumatic 1o pianos and similar instruments, these pneui uiolling valve chest 6th which embodies 65 matics in turn controlling the degree of exthe improved control Idevice of my invenhaust maintained in the Wind chest by the tion. This vulve chest contains three chainexhausting devices, the position of the hanibers 6l, 6:2 and 63, which contain respeo nier rest rail orthe tempo valve. tively the diaijihragin pouch members 64,

i5 One object of my invention is to provide Giraud 66. ln the chamber 6l is a double 7o a new and improved valve control for power n valve .66a ot theI primary type, `which con piieumatics. trois a passage 6i' leading from the top of Another object oit my invention is to prothe valve chest to the chamber 6l. A duct vide a valve control system which will be 61S connnunicates with `the passage k67 and 2o positive in its r,operation and prompt in its extends laterally to the edge ol the blocky 75 response to changes or' pressures. G0.. This passage 68 contains a nipple 69, A1 lS511 ful-they .Object 0f my invention 1S which is connected to a'iiipple -70 by rthe'tube rn* i to provide an improved valve control sysii. i-lze nipple ZO is iu communication With tem in which vthe manual control of lthe the pneumatic 55 through the port 7&2 in the do power pneumatics is supplemented yby note base or Fixed leaif of the pneumatic. The 8o `sheetv control. base of the valve 66l rests upon the dia- Another object of my invention is to prophrugiu 64: and the part oi the chamber vide a manual control for the expansion and 6l which is above this diaphragm is in com collapse of the power pneumatic and a note muuication with the exhaust through the im sheet control which will restore the poiveiduct 73 es shown in l? The part of S5 pneumatic to its original condition, regardthe chamber 6l belov7 the diaphragm 64 is less of the position of the manual control. provided with a bleed opening Tl, which To these and other ends the invention concommunicates with the duct 73. The sists in the novel features and combinations diaphragm 65, which is secured inthe cham- ;5 ot parts to be hereinafter described and ber 62 carries on its lovver side a valve 75, o0 claimed. which controls a port T6, trom which a chiot ln the accompanying drawings: TT leads to the chamber 6l. beloiv the pouch Fig. l is a. perspective view of the valve Gil. A stop 78 is provided to limit the chest containingl my pneumatic control demovement of the valve 76. A second port -ll vice, certa-in associated parts being shoivn TS) leads into the chamber 62 beloiv the 95 more or lessdiagrammatically. diaphragm 65, and this port, is, through a Fig. 2 is a sectional view on line 2 2 of nipple 8l anda tube 82'. in communication Fig, 1 with a valve port 83, Which is controlled Figs. 3, 4- and 5 are sectional views on lines by a valve 83,, mai'uially operated by a 3 3, lr-t, and 5 5 respectively oit Fig. 2. push button Sil located in the key slip 84a. 100

Figs. 6 and 7 are .sectional views similar lt will be apparent that as longas the valve lo Fig. 2, but showing the valves in other port S3 remains closed `to the atmosphere, positions ot operation. the chambers Gl und 62 will be exhausted As has been stated, my improved control bcloiv the diaphragme 6d and (S5-through the ilf device maybe usedivith power pneuinatics bleed oi'icuing 'T-fs these diaphragms 'falling 105 ot yvarious kinds and tor various purposes.k to their lovver i'iosi ions and allowing the However, I have chosen to illustrate one enr valve l .f5v to close the p vt ,T6 andthe double bodiment oi' my invention as applied to an valve 66a to shut oil the air from the duct y expression pneumatic used to control a valve 66 and `vill cause the pneumatic 55 to be which may be assumed to be the expression exhausted through the duct 68, chamber 6l 110 lil and the duct 73. The expression valve 58 will upon the collapse oi the pneumatic 55 be raised trom its seat and a high degree orn exhaust will be maintained in the wind chest.

lVheu the button Sel is depressed, thus allowing the air to flow into the port 83 through the tube Si? and the nipple 81, the diaphragm will be raised, carrying with it the valve '75, so that the air will pass through the duct Y? to the chamber 6l below the diaphragm 64 raising' this diaphragm and the double valve 66, so that the passage 6T will be cut oil from the exhaust duct 73 and the pneuifi'iatic will be flushed with air through the tube 'Tl and the passage 68.

To provide a supplemental note sheet control for the pneumatic 55, the third chamber 68 is provided with a passage 85 ex tendingupward from the chamber through the top of the controlling` chest 60. The ends o'l this passage are controlled by the double valve 86, which rests upon the diaphragm 66, and a duct ST leads from the passage to the chamber 62 above the dla-- phragni 65. The chamber 63 is exhausted through a duct 8S, which communicates with this chamber above the diaphragm 66 and a bleed opening;` S0, which communicates with the duct 88 and the chamber 63 below the diaphragm 66. rlhis portion of the chamber 63 below the diaphragm 66 is provided with a port 90, which through a nipple 91 and tube 92 connected to a perforation 93 in the tracker bar 9st. The note sheet, a fragment of which is shown at 95, will contain pertorations 96 on the margin thereof, which will cooperate with the perforation 93 in the tracker bar.

The operation of my device is as :follows:

When both the valve port 62, .is closed by the valve S3 and the perforation 93 in the tracker bar is closed bv a solid portion oit the note sheet, the valves in the valve chest 60 will be in the positions shown in Fie. Q. It will be seen that exhaust tension will be present vin all of the chambers and ducts, the chambers 6l and 6B being exhausted by the ducts 'T3 and SS and the bleed openings 7l and S9. lilhile that part ot' the chamber 62 below the diaphragm 65 will be exhausted through the bleed opening; Tilaud that part oi the chamber 62 above the diaphragm 65 will be exhausted through the duct 88. Then the valves are in this position. the expression pneumatic will be collapsed, as shown in Fig. l, being exhausted through the tube .7l and the ducts 68 and It will be understood that the valve 66a may, it desired, be so arranged that the expression pneumatic will be tlushed with air when this normal position of the valves obtains. it being` obvious that the parts maivv be arranged so that the expression pneumatic ma)v be normally collapsed or expanded as desired. 'The position shown will be understood, theretore. to be only rfor the purpose ot' illustration. Suppose now the operator depresses the push button S4: and moves the valve 83' from its seat, tlu-reb)v uncovering the valve port This will allow the admission oit air through the valve port S3 below the dia phragm 65, and as the chamber 6i? is subject to exhaust tension above this diaphragm. the saine will be raised and allow the air adn'iitted through the port 8f3 to pass below tho valve 'T5 into the port 76 and through the duct T7 into the chamber 6l below the diaphragm 64.. The valve 66 will then be raised, thus. shutting otl' the duct GS 'from the exhaust duct 73 and allowing` air to enter at the top of the duct 6T and flow into the pneumatic rEhe pneumatic will now be expanded and allow the valve 5S to move towards its seat. This position of the parts is shown in Fig'. 6 et the drawings. it now the operator removes his i'inger 'from the valve 84, the parts will. ret-urn to their normal positions shown in Fig. 2.

lllhile the valve Sel is depressed and the parts are in the position shown in Fig. t, suppose now that a perforation 96 in the note sheet uncovers a port 93 in the tracker bar. This will allow the admission of air through the duct 92 into the chamber 63 below the diaphragm G6. The valve S6 will now be raised, clos" olli` the duct 8T Atroni the exhaust duct 8S and allowing air to enter through ducts 85 and Si' into the chamber 62 above the diaphragm 65. lilith both ports 83 and 93 open, atmospheric air will be admitted to the chamber 62 on both sides ot the diaphragm 65. The part ot this chamber below the diaphragm will, however, be subjected to exhaust through the bleed T4; and for this reason 'the pressure below the diaphragn'i will be slightlyv reduced and the valve 75 will be drawn down upon the port 76. This will close the outlet port T6, so that auv air which is admitted to the chamber 62 below the diaihragm 65 will not reach the chamber 6l below the diaphragm 64 and will. ot course. have the same eltect as it the valve 623 were closed. The chamber 6l below the diaphragm 64 will now be exhausted through the bleed Tl, the valve 66:t will drop and the pneuinatic 55 will now be exhausted and will collapse. raising the valve 5S from its port and restoring it to its normal position. The position ol the parts under these conditions. when both the ports S3 and 9S are open.. is shown in Fig. T ot the drawings. rlhis condition will. olE course. onlvv last while the pertoratiou in the note sheet is in register with the perforation the tracker bar and when the perforation iu the note sheet has passed over the tracker bar, the valve S6 will drop down to its originail position, dueftoy the airbelow the diaphragm 66 being` exhausted through the bleed S9 and the air above the diaphragm 65 will be exhausted through the duct SS and' the diaphragm 65 willflie raised, due to the atu'iospheric pi'essure ybelow this diaphragm eausedby thefair flowing in through the port 83. will now be in Fig. 6.

lt will be apparent that I have provided means, including'the vvalve 83 and the ducts 8l, 79 and 77, tor contifolling primarily the position ot the. valve 66". Thilo-this valve under the control ol `the push button 84, there is provided means consisting ot the val-.ve 86 controlled by the port 93 in the tracker bar .tor restoring the val-ve 66a to its original position. Il' the port 93 is uncovered by a -per'tt-nration in the note sheet and the valve 84 .is then depressed, the valve 65 will be retainedy upon the port 76 closing the same, and the opening oit the valve 8S will have no cli'ect. VKlhereifore, when the valve 86 is in. its raised' position, admitting air throughthe ducts 85 and 87 to which is still open. The parts restored rto1 the position shown the cliaimber 62 above thediaphragm 65, the

valve 66n and-.the pneumatic 55 will always be -in the position showny in Fig. 7, regardless of the 'position-ot the valve S3".

It will be apparent thatthe port 7 t) serves as. an vrinlet-,port to admit an.' to the chamber ft2' below the `diaphraggm 65, and that the `duet 77 serves as an outlet to carry this an' to the cl'ramber 6l below the diaphragm 6st.

The valve 75, when actuated. serves as a means `to close this air course which eon- .sist-s of the tube S2. the nipple 81, the port 79. andthe duct. 77, hv closing" the youtlet .port 76.

The bleed ,74, lb v being situated between this part ot the air cou-rse which may beY closed toprevent the -supplvof air trom reza-Thinei the chamber 61 and the diaphragm 64j. will exhaust this part ot the air course Aand cause the valve 75 to close at the yproper time.

llhile I have illustrated and described a specific embodin'ient ot my invention.v it is to be kunderstood ,that the same .is not to be restricted tothe exact detail-s shown. but it is -fapahle ot man v modifications and variations. which will fall. within the spirit of the invention and within the scope ot ythe .appended claims.

l'malfe no claim in this application to the combination ot van expression valve. means to unive said valve to. var v the tone etlects ycontrolled thereby and separate means to restore said valve to its original position, as such clam'isare incorporated in mv copending application, Serial No. ll877i tiled oet. es.. i920.

Theterin controllingr valve, as used in this application. refers to the valve 66, which controls the power pneumatic 55.

diat I claim is:

yl. In a penulnatic control device, a-...poiver pneumatic, a valve to control fthe admission of atmosphere and exhaust to said fpneumatic, means `to supply air below id Avalve to movel the same and means, independent ot said first named iineans, to ccnt oft saidair supply.

2. In a pneini'iatic'control device, a power pneumatic normally in one condition'of collapse or expansion, means forclianging the pneumatic from one condition to the other, and means tor restoring theorigiinil condition of the pneumatic while said changing Vmeans is still in its operative position.

23. :In a pneun'iatic control device, a power pneumatic, a duct con'muinicating with said pue matic, a valve to open said duct -to atmosphere or exhaust to control the alhnission of atmosphere or exhaust to saidnpneumatic, a second pneumatic to control said valve, an air course leading to said lastnan'ied pneumatic to supply atmospheric. air

thereto, and rpneumatic `means to obstruct said air course intermediate its ends=to prevent the passa ge of air tl'ieretln'ough.

5. ln'a pneumatic control device, a cou- 'trolling valve, means operable to-n'iove said valve trom one position to another. and means to restore said valve `to its original position while said movingv means isstill in operative position.

6. In a pneumatic control device, :a diaphragm, a valve oi'ierated thereby, means operable to supply air below said diaphragm to operatethe same, and means to cut oli' said air supply from said diaphragn'i while said suiiplv means is still in operativeposition,

7. In a pneumatic eontrolndevice, a cham` lierin'ovided with any outletport andan inlet port, a valve insaid chamber operable to close said outlet port, a pneumatic iii said chamber to operate said valve, kand means including a second valve to control the operation ot said pneumatic.

6. l'n a pneumatic eontroldevice, a chamber, a diaphragm dividingv said;v chamber into two parts, one part of said chamber being i'irovided with inlet and outlet portssaid diaphragm carrying a valve cooperating` with one ot said ports, andthe other part-of said chamber being' provided with a port through which air or exhaust may be alternately admitted to actuate said valve.

JUS

9. In a pneumatic control device`v a controlling valve, a diaphragm to operate the same, means providing a valved port through which air mayv be admitted to actuate the diaphragm. an air course leading Ylron. said Yalved port to said diaphragm, and means tor closing an intermediate portion oit said air course to cut off the supply of air ad mitted through said port.

l0. In a pneumatic control device, a controlling valve, a diaphragm to operate the same, means providing a valved port through which air maj: he admitted to actuate the diaphragl'n, an air course leading from said valved port to said diaphragm, and means ior closing an intermediate portion of said air course to cut oli' the suppl)T of air admitted through said port, said air course being provided ivith a bleed opening between said diaphragm and said intermediate closable portion.

1l. In a pneumatic control device, a controlling valve, a diaphragm to ope'ate the same, means providing` a vilved port through which air may be admitted to actuate the diaphragm. an air course leading from said valved port to said diaphragm, means providing a second port, and means controlled by the opening and closing of said second port for closing an intermediate portion of said air course to prevent operation of said valve by air entering through said valved port.

l2. In a pneumatic control device, a controlling valve, means to operate said valve including a valve port through which air may be admitted and means including a second air port to restore said valve to its original position While said first port is still open.

13. In a pneumatic control device, a controlling valve, a valved port adapted to be opened to operate said valve, and note sheet controlled means to restore said valve to its original position While said valved port is still open.

14. In a pneumatic controlling' device, a controlling` valve normally occupying a given position, means including a valved port to move said valve trom its normal position, and means to restore said valve to its normal position and retain therein Whether said valved port is open or closed.

l5. In a pneumatic controlling device, a power pneumatic, a controlling valve movable to control the same, means includingan air port to move said valve, and noto sheetcontrolled means to restore said *alve to its original position Whether said air port is open or closed.

lli. In a pneumatic control device, a controlling valve, means to move said valve from its normal position, and means to temporaril;7 restore said valve, movable in a single direction to its original posit-ion and return it to the position to which it was moved.

17. In a pneumatic control device, a controlling` valve, means to admit air below said valve to operate the same, and note sheet controlled ni 2ans to temporarily restore said valve to inoperative position during the admission ot' air through said means.

18. A power pneumatic, a control device therefor comilirising a chest, said chest'. containingl a valve chamber, a valve therein to control said power pneumatic, a second chan'iber in said chest., a duct .leading from said second chamber to said lirst chamber, and means in said second chamber to close said duct.

I9. A power pneun'iatic, a control device therefor comprising a chest, said chest containing a valve chaii'ibor, a valve therein to control said poiver pneumatic, a second chamber in said chest, a duct yleading from said second chamber to said hrst chamber, a duct to admit air to said second chamber, said ducts communicating with each other through said chamber and means for cutting ott' said communication.

20. A power pneumatic, a control device therefor comprising a chest, said chest containing a valve chamber, a mlve therein to control said poiver pneumatic, a. second chamber in said chest, a duct leading from said second chamber to said first chamber, a duct leading' into said second chamber and communicating with said first duct therethrough and a valve in said second chamber for cutting oitI said communication.

21. A power pneumatic, a control device therefor comprising a chest, said chest containing a valve chamber, a valve therein to control said pneumatic, an air course leading into said valve chamber, said chest having a second chamber forming a part of said air course and means in the second chamber for closing said air course.

22. In a pneumatic control device, a power pneumatic, a valve controlling the admission ot atmosphere or exhaust to said pneumatic, a second pneumatic to control, said valve, an air course .leading to said last named pneumatic to suppl;7 atmospheric air thereto, said air course including a chamber and air chiots leading into and out of' said chamber, a diaphragm lspanning` said chamber and provided with a valve closing one of said ducts, the communication of said ducts With said chamber being upon one side of said diaphragm, and means to supply atmospheric air to said chamber upon the other side of Said diaphragm.

23. In a pneumatic control device, a poiver pneumatic` a valve controlling the admission of atmosphere or exhaust to said pneumatic, a second pneumatic to control said valve, a manually controlled air course leading to said last named pneumatic to supply atmospheric air thereto, said air course including a chamber', and air ducts leading into and out of said chamber, a diaphragm spanning said chamber and provided with a valve closing` one of said ducts, the coinn'iunication o1" raid ducts with said chamber bein` upon one side of said diaphragn'i, and notesheet controlled means to supply atmospheric air to said chamber upon the other side of said diaphragm.

24. In a pneumatic control device, a controlling valve means to move said valve from its normal position and continnousl7 moving` means to temporarily restore said Valve to its original position.

25. In a pneumatic control device, a controlling valve means to move said valve vfrom its normal position, and means movable to temporarily restore said valve to its original position, and upon a continued movement thereof in the same direction to permit the valve to again move from its normal position.

26. In a pneumatic Control device, a port, a pneumatic carrying a valve to control said port, means fo admitting atmospheric air to both sides of said pneumatic, and a bleed to reduce the pressure on one side thereof to operate the same.

27. In a pneumatic control device, a chest presenting a. chamber, a diaphragm in said chamber, means for admitting air upon either side of said diaphragm, a duct leading from said chamber and controlled by the diaphragm, said duct beingl in restricted communication with a source of exhaust to reduc-e the pressure upon one side of the diaphragm to operate the same. r

Q8. In a pneumatic control device, a chest having a pair of valve chambers provided with operating' pneumatics and valves, a third chamber in said chest and a pneumatic in said chamber, a duct leading from one of said valve chambers to one side of said pneumatic, a duct leading` from the yother' side of said pneumatic to the other valve chamber below the diaphragm therein, and means to admit air to the last named side of said pneumatic in said third chamber.

In Witness whereof, I have hereunto set my hand on the 20th day of October, 1920.

STANLEY L. FISHER.

CERTFICATE F CMETIN,

Patent No. 1,626,192. Gramm April Z6, 1927, t0

STANLEY L 51511111111.,

It is hereby Qertifed 11m err-@r im me primed. specifiaaton of the above numbered paen; iwsquirmg @@memiqm as QEQWS; Page 4:7 1in@ 36, claim 12 im" the word Wahn?" m "vmwak mm@ mes 64 arid 65, claim 16, strike om the comma an@ Wmrs mova@ u Singh direeslon" and insert the same t0 follow after the ward "mamy m 1in@ 63; m11 wat the said Letters Patent should 1m mad with mese mrmmimshfemn ha the same may conform to the record of the case in the Patfm @fis Signed and seaed hs 31M day Maya A. .El .1927.

M, J. Moore, y Seal. Acting ommissioaer of Patents.

CERTEFECATE m? CRREGTIIN.

Patent No. 1,626,192. Granted April 26, 1927, t0

STANLEY L HSE-BE It s herby certifie@ that errar appears in tha primed specifiaaon of the above numbered patent aquring coretma as HWS: Page 47 Eine 36, claim t2 for the word "waive" "wave Same pagte, mes 64 .and 65, claim 16, strike met the comma m ,fvfm'cs"e mfwbe in a Singh: dinamica" and insert the same to folow after the Wrd "means" in time 63; and that the said Letters Patent ,houei be read with. these wrmctams therein that the saam@ may conform to the record of the @fase in the Patent @ee Signd and sealed this 31st day May', A. D, 1927.

, M. J. Moore, v SeaL Acting Commissioner of Patents. 

